Delmont, SD (ZIP 57330) has experienced 85 recorded natural disaster events based on federal and state agency records. These include 56 hailstorms, 9 blizzards, and 8 tornadoes. Total documented property damage amounts to $76.8M. These events have resulted in 1 recorded death and 12 injuries.
The dominant hazard type for Delmont is hailstorms, with 56 recorded events making up 66% of the area's disaster history. Of these, 3 (5%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for hail-related events here is 5/5 (extreme). Hail-related events have caused a combined $99K in documented property damage. The most recent recorded hailstorm occurred on May 19, 2025.
Delmont has experienced 9 blizzards on record. Of these, 4 (44%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for winter storm events here is 5/5 (extreme). Winter storm events have caused a combined $11.2M in documented property damage. 1 fatality has been attributed to blizzards in this area. The most recent recorded blizzard occurred on Apr 9, 2013.
Delmont has experienced 8 tornadoes on record. Tornado-related events have caused a combined $1.8M in documented property damage. The most recent recorded tornado occurred on Jul 17, 2019.
Delmont has experienced 7 severe wind events on record. Wind-related events have caused a combined $85K in documented property damage. The most recent recorded severe wind event occurred on Jun 27, 2025.
Delmont has experienced 4 floods on record. Of these, 4 (100%) were rated at severity level 4 or 5 — the most intense on the normalized scale. The highest recorded severity for flood-related events here is 5/5 (extreme). Flood-related events have caused a combined $63.6M in documented property damage. The most recent recorded flood occurred on Jun 20, 2024.
Delmont has experienced 1 extreme heat event on record. Heat-related events have caused a combined $25K in documented property damage. The most recent recorded extreme heat event occurred on Jul 15, 2011.
The most significant disaster event on record for Delmont was Flood on Jun 1, 2019, which caused $61.5M in property damage. Another major event was Winter Storm (Apr 9, 2013), causing $10M in damages. EF2 Tornado on May 10, 2015 also caused significant damage ($1.5M).
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Based on federal and state records, ZIP code 57330 has experienced 85 natural disaster events. The hazard types affecting this area include hailstorms (56 events), blizzards (9 events), tornadoes (8 events), severe wind events (7 events), floods (4 events), and extreme heat event (1 event). The primary hazard is hailstorms, which account for 66% of all recorded events.
Hailstorms are the most frequently recorded hazard in Delmont, SD, with 56 events documented. These events have caused a combined $99K in property damage.
Yes, Delmont (ZIP 57330) has 4 recorded flood events. These floods have caused $63.6M in total property damage. The most recent flood on record occurred on Jun 20, 2024.
Delmont has 8 recorded tornado events in the historical record. The strongest tornado recorded reached severity level 3/5 on the normalized scale. Total property damage from tornadoes in this area is $1.8M. The most recent tornado was recorded on Jul 17, 2019.
The most damaging natural disaster on record for ZIP code 57330 was Flood, which occurred on Jun 1, 2019. This event caused $61.5M in documented property damage. It was rated at severity level 5/5.
Natural disasters have caused a documented total of $76.8M in property damage in the Delmont, SD area (ZIP 57330). This figure is based on historical records from FEMA, NOAA Storm Events Database, and USGS, and covers events from the 1950s through the present. Actual damages may be higher, as not all events have complete damage assessments.
Data sourced from FEMA (disaster declarations, NFIP flood claims), NOAA Storm Events Database, USGS Earthquake Hazards Program, and NIFC wildfire records. Historical coverage varies by source, with most records beginning in the 1950s–1970s. Full methodology →